Water-filter.



' No. 690,540. Patented Jan. 7, I902. W. WAGNER.

WATER FILTER.

(Applicatiop. filed Apr. 29, 1901.)

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W. WAGNER.

WATER FILTER.

(Application filed Apr. .29, 1901 (No Model.) 2 Shets8heet 2.

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UNITED STATES PATENT OFFICE.

WALTER WAGNER, OF BERWYN, ILLINOIS.

WATER-FILTER.

SPECIFICATION forming part of LetterslE atent No. 690,540, dated January 7, 1902. Application filed April 29,1901. Serial No. 57 949. (No model.)

To aZZ whom, it may concern:

Be it known that I, WALTER WAGNER, a citizen of the United States, residing at Ber- Wyn, in the county of Cook and State of Illi nois, have invented certain newand useful In1- provements in Water-Filters,- which are fully set forth in the following specification, reference being had to the accompanying drawings, forming a part hereof, and in which- Figure 1 shows alongitudinal section of my said device. Fig. 2 shows Fig. 1 in entirety and in plan view. Fig. 3 shows Fig. 2 in transverse section. Fig. 4 showsa longitudinal section of a modification of Fig. 1.- Fig. 5 shows Fig. 4 in transverse section.

Like letters of reference denote like parts in all the figures.

The object of my invention is to produce a suitable agitating mechanism for scouring the sand in filter-basins wherein the current is reversible, and minor improvements, as shown. To attain said desirable end, I construct my said new device in substantially the following manner, namely On the walls of the filter-basin a, provided with reversible inlet and outlet pipes 11 I),

are set-posts (2', bearing at their tops revoluble shafts d, and to said shafts are attached stirrers or arms e, vibratab'le like a pendulum from said shaft or shafts 01, carrying at their lower ends transverse stirring spurs or pins f, which enter into and stir up the filteringsand g. Said arms and their spurs are made as numerous as circumstances may prove necessary. A series of crank-arms h are attached to the ends of the shafts d, and to them is secured a connecting-bar 't', of which one end is joined to a connecting-rod j, which is actuated by a crank It, driven by g'earslm of a dynamo at or other suitable motor.

In my modified construction there are pendent arms a", to the free ends of which is attached pivotally'a framework composed of a set of outer bars 0 and thereto attached transverse bars 0, from which descend rigidly-fixed stirrer-arms q, having near their ends the same transverse pins of stirringspurs f as shown in the former construction and used for the same purpose-namely, to stir the sand thoroughly, and thereby scour it and free it from all adhering and foreign substanceswhile the reversed current is fed through the pipe I) and forced through the bottom of the filter-bed and discharged into and thence through the canals and pipe b. In the preferred construction the arms e,which swing or vibrate'like pendulums; are suspended out of the sand, as shown; a condition which is considered a desirable advantage, because it leaves the sand free from any foreign material while the filtering process is going on.

The canals affords an all-around overflow, and therefore a quick discharge from the filter of all material loosened from the sand by the stirrers or agitators, and thereby greatly facilitating the thorough cleansing of the sand of the filtering-bed.

What I claim is I The combination with a reversible-current filter-basin, of re'ciprocable stirring-arms in series on fixed fulcrums above said basin, substantially as specified.

WALTER WAGNER.

Witnesses:

WM. ZIMMERMAN, CHARLES E. CONGLETON. 

